Mold-slide safety device



April 20,1926. 1,581,182

T. F. DUFF 'IOLD SLIDE SAFETY DEVICE Filed March 16, 1925 I uFF;

A TTORNEYS.

mmvroa I Patented Apr. 20, 1926.

UNITE STATES anai THOMAS E. nuns, or HAMILTON, ALABAMA.

MOLD-SLIDE SAFETY Application filed. March 16, 1925.

To all whom it may concern:

Be it known that THOMAS F. D FF, a citizen of the United States, residing at Hamilton, in the "county of Marion and State of Alabama, has invented new and useful Improvements in Mold-Slide Safety Devices, of which the following is a specification.

This invention relates to line castingmachines and more particularly to an automatic clutch releasing mechanism.

An important object of the invention is to provide an automatic clutch releasing mechanism which is associated with and is operated by the mold sliding handle so that when the mold sliding handle is depressed the clutch will be operated.

A further object of the invention is to provide a clutch releasing mechanism of the character specified which is of highly simplified construction, durable in use, and which may be applied to a standard line casting machine without altering the construction of the same. i

Other objects andadvantages will beapparent during the course of the following description:

In the accompanying drawings forming a part of this invention and in which like numerals are employed to designate like parts throughout the same,

Figure 1 is a fragmentary elevation illustrating the clutch releasing mechanism applied.

Figure 2 is a perspective of the clutch releasing mechanism and the mold slide handle detached.

Figure 3 is a group perspective of the clutch releasing mechanism for use in connect-ion with the mold slide handle.

In the drawings, wherein for the purpose of illustration is shown several preferred embodiments of the invention, the numeral 5 generally designates a line casting machineequipped with the usual mold 6 having one end provided with the hooked ear 7 with which a roller 8 is engaged.

Figure 2 illustrates that the roller 8 is carried by the lower branch 9 of a lever 10, the said lever being fulcrumed as indicated at 11 to a bracket 12. The handle is desig- DEVICE.

Serial No. 1 6,013.

hated by the numeral 14 and as is well known may be rocked vertically. When the handle 14 is in its uppermost position as illustrated in'Figure 1,' the roller designated by the numeral 16 is positioned in the groove 18 in the cam wheel 2O and the roller 8is operatively connected to the hooked extension 7 whereby the turning of the wheel'2O will result inthe reciprocation of the mold slide 6, all of which is believed to be'old and well-k nownin the art.

The invention covering the subject-matter of this application resides in the means for actuating the horizontal clutch operating lever 22 when themold slide handle 1a is moved to its lowermost position. This is brought about by connecting the upper portion of a depending arm or link 26 to the terminal portion of the branch 9 and connecting the oiiset lower end portion 28 of the link 26 with the attaching portion 29 of a horizontal arm 30. Figures 1 and 2 plainly illustrate that the horizontally arranged arm 80 is provided at its one terminal portion withan upwardly extending wedge 32 adapted to be forced up between the frame of the machine and the lower portion of the vertical'lever 841. Whenthe vertical lever 3t is moved outwardly by the wedge 82 it operates the forked lever 22 which in turn actuates the clutch mechanism 38 to stop the machine.

it will beseen that when the handle 1 1 is depressed by the operator the linkl26 will be raised to bring about the positioning of the wedge between the lower portion oi the vertical lever 3 and the adjacentportion of the machine frame so that eachtime the roller 8 is disengaged from the hooked ear 7 the machine is stopped.

Referring now to Figure 2, it will be seen that the offset lower end portion 28:01 the link 26 is slotted longitudinally for the reception of a pair of bolts 40 or other fastening devices which provide a means for adjustably connecting the attaching portion 29 of the arms '30 to the offset lower portion 28 of the link 26. By adjusting the horizontal arm 30 vertically the responsiveness of the clutch release may be varied As illustrated in Figures "hand 2, an

L-shaped guide rod 44 is extended through the longitudinal slot 46 in the intermediate portion or" the arms 30 and provides a convenient means for holding the wedge carrying arm 30 against lateral movement. The upper horizontal portion of the guide rod as is extended through the opposite side of a cap as which may be secured upon one of the nuts 50 ot' the machine and held in plac by means or" a set screw 52.

Having thus fully described my invention what I claim as new is 1. In a line casting machine, the combination of an operating lever, a lever having means for connection with a mold slide, a link having connection with said lever, a laterally projecting arm connected to said link, and having an upwardly extending wedge positioned below and backward of said operating lever, and a clutch controlling lever actuated by said operating lever when said operating lever is moved by said wedge.

2. In a line casting machine, the combination with a mold slide, a cam wheel cooperating slide, a lever having connection with the wheel and the slide, a vertical link having connection with the lever and having its lower portion oliset, a laterally projecting arm adjustably connected to the offset lower portion of said link and having an upwardly extending wedge, a clutch controlling lever and a vertical lever, said wedge being adapted to actuate the clutch controlling lever by means of said vertical lever.

3. In a line casting machine, the combination of a vertical lever mechanism, of ELsOllltCll controlling lever arranged adjacent the vertical lever mechanism, a mold slide controlling member, a link having connection with said mold slide controlling member and having a laterally projecting arm, and means carried by'said arm and adapted to move said vertical lever mechanism into engagement with said clutch controlling mechanism for actuating the clutch controlling mechanism. v

4. A clutch controlling mechanism for line casting machines comprising a link.

adapted for connection with a mold slide lever and having its lower portion offset and formed with a slot, a horizontal arm having attaching means adjustably extended through said slot and being provided with a wedge adapted to be positioned between a movable vertical lever of the line casting machine and the frame of the machine for operating the clutch release lever.

5. A clutch controlling mechanism for line casting machines comprising a link adapted for connection with a mold slide lever and having its lower portion offset and formed with a slot, a horizontal arm having attaching means adjust-ably extended through said slot and being provided with a wedge adapted to be positioned between the frame of the machine and the vertical lever ofthe machine, and a vertical guide rod extended through said horizontal arm and having a horizontal attaching portion.

6. A clutch controlling mechanism for line casting machines comprising a link adapted for connection with a mold slide lever and having its lower portion offset and formed with a slot, a horizontal arm having attaching means adjustably extended through said slot and being provided with a wedge adapted to be positioned between the frame of the machine and a movable vertical lever of the line casting machine, a guide rod for extending thru a slot in said horizontal arm, and an attaching cap for said guide rod.

7. In a line casting machine, a mold slide lever, a link pivotally connected to said mold slide lever, a movable member upon said machine and means upon said link adapted to operate said movable member for disconnecting the'clutch upon the dis connection of the mold slide lever from the mold.

8. An automatic clutch controlling mechanism for line casting machines comprising a hand lever, a bell crank associated with the hand lever, a dog carried by the bell crank and adapted for engagement with said hand lever, and means carried by a portion of the line casting machine for operating said bell crank.

9. An automatic clutch controlling mechanism for line casting machines comprising a hand lever, a bell crank associated with the hand lever, a dog carried by the bell crank and adapted for engagement with said hand lever, and means urging said dog into operative engagement with said hand lever.

10. In a line casting machine, the combination of a vertically movable vise frame and a clutch controlling bar, a hand lever for controlling the said bar, a bell crank arranged above said lever and having a roller, a triangular cam carried by said vise frame and adapted for engaging said roller to operate said bell crank, and a dog having adjustable connection with said bell crank and engaged with said hand lever.

11. In a line casting machine, the combination of a vertically movable vise frame and a clutch controlling bar, a hand lever for controlling the said bar, a bell crank arranged above said lever and having a roller, a triangular cam carried by said vise frame and adapted for engaging said roller to operate said bell crank, a pin carried by said bell crank, and a spring having connection with said pin.

12. In a line casting machine, the c0mbination of a vertically movable vise frame and a clutch controlling bar, a hand lever for controlling the said bar, a bell crank arranged above said lever and having a roller, a triangular cam carried by said vise frame and adapted for engaging said roller to operate said bell crank, 21 pin carried by said bell crank, and a spring having connection with said pin for urging said dog into engagement With said hand lever, said dog being of L- haped forination.

In testimony whereof I affix my signature.

THOMAS F. DUFF. 

